<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://unpkg.com/react@17/umd/react.production.min.js" rel="external nofollow" rel="external nofollow"></script>
    <script src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js" rel="external nofollow" rel="external nofollow"></script>
    <script src="https://unpkg.com/babel-standalone@6/babel.min.js" rel="external nofollow" rel="external nofollow"></script>

</head>

<body>

    <div id="example"></div>

    <script type="text/babel">

        ReactDOM.render(
        <h1 id="title">你好</h1>,document.getElementById('example'));

    </script>
</body>

</html>